rust/tests/codegen/drop-in-place-noalias.rs

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// compile-flags: -O -C no-prepopulate-passes
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// Tests that the compiler can apply `noalias` and other &mut attributes to `drop_in_place`.
// Note that non-Unpin types should not get `noalias`, matching &mut behavior.
#![crate_type="lib"]
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use std::marker::PhantomPinned;
// CHECK: define internal void @{{.*}}core{{.*}}ptr{{.*}}drop_in_place{{.*}}StructUnpin{{.*}}({{.*\*|ptr}} noalias noundef align 4 dereferenceable(12) %{{.+}})
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// CHECK: define internal void @{{.*}}core{{.*}}ptr{{.*}}drop_in_place{{.*}}StructNotUnpin{{.*}}({{.*\*|ptr}} noundef nonnull align 4 %{{.+}})
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pub struct StructUnpin {
a: i32,
b: i32,
c: i32,
}
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impl Drop for StructUnpin {
fn drop(&mut self) {}
}
pub struct StructNotUnpin {
a: i32,
b: i32,
c: i32,
p: PhantomPinned,
}
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impl Drop for StructNotUnpin {
fn drop(&mut self) {}
}
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pub unsafe fn main(x: StructUnpin, y: StructNotUnpin) {
drop(x);
drop(y);
}